Water-cooling heat dissipation system of hydrogen production power supply

Abstract

The utility model discloses a water-cooling heat dissipation system of a hydrogen production power supply, and relates to the technical field of power supplies. The heat dissipation system comprises a closed-loop circulating water cooling structure and an air-liquid heat exchanger which are connected with each other, the closed-loop circulating water cooling structure comprises a water-cooling hydrogen production cabinet (14), a front-stage IGBT power module (1) and a rear-stage IGBT power module (15), and the front-stage IGBT power module (1) and the rear-stage IGBT power module (15) are both arranged in the water-cooling hydrogen production cabinet (14). The utility model provides a hydrogen production power supply water-cooling heat dissipation system, which adopts a closed-loop circulating water-cooling structure, directly absorbs heat generated by an IGBT module through a heat dissipation water-cooling plate, and utilizes a fan of an air-liquid heat exchanger as an auxiliary heat dissipation device, thereby effectively accelerating heat dissipation and ensuring the stability of an IGBT hydrogen production power supply under high-power and long-time operation.

Description

A water-cooled heat dissipation system for hydrogen production power supply Technical Field

[0001] This utility model relates to the field of power supply technology, and in particular to a water-cooled heat dissipation system for hydrogen production power supply. Background Technology

[0002] Hydrogen energy, as a clean, efficient, and sustainable energy source, has received widespread attention globally in recent years. With increasing global emphasis on environmental protection and sustainable development, the hydrogen energy industry is gradually emerging and becoming an important direction for future energy structure transformation.

[0003] Hydrogen production equipment requires a specific power system to support its long-term, high-load operation. Due to the heavy workload of hydrogen production equipment, the power system generates considerable heat during continuous operation. Excessive heat accumulation can lead to component failure and power reduction, adversely affecting the normal operation of the hydrogen production equipment. Therefore, an effective heat dissipation system ensures stable operation and extends the equipment's lifespan. Traditional cooling methods, such as natural air cooling, have low efficiency; for high-power equipment, natural convection alone is insufficient to effectively dissipate heat. Forced air cooling, while more efficient than natural air cooling, may produce noise levels that are unacceptable in certain application environments and requires regular maintenance and replacement of fans and air ducts. Early water cooling systems offered higher efficiency than air cooling, but some early or poorly designed water cooling systems suffered from coolant contamination, low heat exchanger efficiency, and coolant leaks. Summary of the Invention

[0004] To overcome the problems of low heat dissipation efficiency, complex structure, inconvenient maintenance, and coolant leakage risk in existing IGBT hydrogen production power supply heat dissipation systems (IGBT: Insulated Gate Bipolar Transistor), especially in high power density operating environments where the heat generated by the IGBT power module is difficult to dissipate effectively, affecting the stability and lifespan of the power supply, this invention provides a water-cooled heat dissipation system for hydrogen production power supplies. By employing a closed-loop circulating water cooling structure and a wind-liquid heat exchanger, the heat dissipation effect is further improved.

[0005] This utility model provides a water-cooled heat dissipation system for a hydrogen production power supply. The system includes a front-stage IGBT power module (1) and a rear-stage IGBT power module (15), as well as a first heat dissipation water-cooling plate (5) and a second heat dissipation water-cooling plate (18) that are tightly fixed to the power modules for directly absorbing the heat generated by the modules. The system adopts a closed-loop circulating water-cooling structure. The front-stage IGBT power module (1) and the rear-stage IGBT power module (15) are respectively provided with a front-stage main water circuit and a rear-stage main water circuit. They are connected to the inlet and outlet of the first heat dissipation water-cooling plate (5) and the second heat dissipation water-cooling plate (18) through (stainless steel corrugated pipes) to form a closed-loop circulation. In addition, the system also integrates a wind-liquid heat exchanger as an auxiliary heat dissipation device. A fan (19) blows external cold air onto the surface of the heat exchanger to carry away the heat absorbed by the coolant and improve the heat dissipation efficiency. The front-stage No. 4 heat exchanger (12) and the rear-stage No. 3 heat exchanger (22) adopt a connecting tube coil design to effectively prevent coolant leakage. The coolant is a mixture of ethylene glycol and water, which has excellent antifreeze and thermal conductivity. Pressure gauges are installed on both the external inlet (9) and the external outlet (11) to monitor the water pressure in real time. The entire system is tightly connected by stainless steel bellows, forming a highly efficient, low-noise, and reliable water-cooled heat dissipation circulation loop.

[0006] Specifically, the objective of this utility model is achieved through the following technical solutions:

[0007] A hydrogen production power supply water cooling heat dissipation system is provided, including a closed-loop circulating water cooling structure and an air-liquid heat exchanger connected to each other. The closed-loop circulating water cooling structure includes a water-cooled hydrogen production cabinet (14), a front-stage IGBT power module (1), and a rear-stage IGBT power module (15). The front-stage IGBT power module (1) and the rear-stage IGBT power module (15) are both installed inside the water-cooled hydrogen production cabinet (14).

[0008] The front-stage IGBT power module (1) is provided with a front-stage No. 1 heat exchanger (2) on one side, and a first heat dissipation water cooling plate (5) is fixed on the front-stage IGBT power module (1). The front-stage main water circuit is provided below the front-stage IGBT power module (1). The front-stage main water circuit includes a front-stage inlet pipe (6) and a front-stage outlet pipe (7) that are connected to each other.

[0009] The rear IGBT power module (15) is fixed with a second heat dissipation water cooling plate (18), and a rear main water circuit is provided below the rear IGBT power module (15). The rear main water circuit includes a rear inlet pipe (20) and a rear outlet pipe (21) that are connected to each other.

[0010] Preferably, the front-end IGBT power module (1) and the rear-end IGBT power module (15) are interconnected.

[0011] Among them, the front-end IGBT power module (1) converts AC power into DC power and sends it to the back-end IGBT power module (15).

[0012] Preferably, the first heat exchanger (2) is located on the left side of the first IGBT power module (1) and is fixedly connected to the first IGBT power module (1).

[0013] Preferably, the first heat exchanger (2) is fixed on the left side of the water-cooled hydrogen production cabinet (14) for heat dissipation of the water-cooled hydrogen production cabinet (14).

[0014] The first heat dissipation water-cooled plate (5) and the second heat dissipation water-cooled plate (18) are in close contact with the power module and are used to absorb and conduct heat.

[0015] Among them, the first heat dissipation water-cooled plate (5), the air-liquid heat exchanger and the front-stage main water circuit form a primary cooling process, and the primary cooling process uses liquid as the cooling medium. The second heat dissipation water-cooled plate (18), the air-liquid heat exchanger and the rear-stage main water circuit form a secondary cooling process, and the secondary cooling process uses air as the cooling medium. The primary cooling process and the secondary cooling process form a closed-loop circulating heat dissipation.

[0016] Furthermore, the pre-stage main water circuit also includes a pre-stage No. 2 main water circuit heat exchanger (3) and a pre-stage No. 3 main water circuit heat exchanger (4) connected to each other. The pre-stage No. 2 main water circuit heat exchanger (3) is connected to the pre-stage outlet water pipe (7). A pre-stage No. 4 heat exchanger (12) is provided below the pre-stage main water circuit.

[0017] The aforementioned front-stage No. 4 heat exchanger (12) is fixed below the front-stage main water circuit and is used to dissipate heat from the front-stage power cabinet.

[0018] Furthermore, the downstream main water circuit also includes a downstream first main water circuit heat exchanger (16) and a downstream second main water circuit heat exchanger (17) connected to each other. The downstream second main water circuit heat exchanger (17) is connected to the downstream outlet water pipe (21). A downstream third heat exchanger (22) is provided below the downstream main water circuit.

[0019] Preferably, the pre-stage main water circuit and the post-stage main water circuit are connected by a stainless steel corrugated pipe to form a closed-loop circulating water circuit.

[0020] The third heat exchanger (22) is fixed below the main water circuit of the downstream stage and is used to dissipate heat from the downstream power cabinet. The third heat exchanger (22) is connected to the downstream inlet pipe (20) of the main water circuit of the downstream stage through a stainless steel corrugated pipe.

[0021] Furthermore, the first heat dissipation water cooling plate (5) is provided with a first port (23) and a second port (24). The first port (23) is connected to the front-stage water inlet pipe (6), and the second port (24) is connected to the front-stage water outlet pipe (7).

[0022] Preferably, the first port (23) is a water inlet and the second port (24) is a water outlet.

[0023] Preferably, the first port (23) is connected to the upstream water inlet pipe (6) via a stainless steel corrugated pipe.

[0024] Preferably, the second port (24) is connected to the upstream water outlet pipe (7) via a stainless steel corrugated pipe.

[0025] Furthermore, the second heat dissipation water cooling plate (18) is provided with a third port (25) and a fourth port (26). The third port (25) is connected to the downstream water inlet pipe (20), and the fourth port (26) is connected to the downstream water outlet pipe (21).

[0026] Preferably, the third port (25) is a water inlet and the fourth port (26) is a water outlet.

[0027] Preferably, the third port (25) is connected to the downstream water inlet pipe (20) via a stainless steel corrugated pipe.

[0028] Preferably, the fourth port (26) is connected to the downstream water outlet pipe (21) via a stainless steel corrugated pipe.

[0029] The aforementioned front-stage main water circuit is used to transport cooling water. The cooling water in the front-stage main water circuit and the rear-stage main water circuit can be distributed to different heat exchangers through stainless steel corrugated pipes via the front-stage inlet pipe (6) and the rear-stage inlet pipe (20). The cooling water flowing out of the radiator flows into the front-stage outlet pipe (7) and the rear-stage outlet pipe (21) through the stainless steel corrugated pipes.

[0030] Furthermore, the rear water inlet pipe (20) is provided with an external water inlet (9) on one side, and the rear water outlet pipe (21) is provided with an external water outlet (11) on one side. The front water inlet pipe (6) and the rear water inlet pipe (20) are both connected to the external water inlet (9), and the front water outlet pipe (7) and the rear water outlet pipe (21) are both connected to the external water outlet (11). The first heat dissipation water-cooled plate (5) is connected to the front water inlet pipe (6) of the front main water circuit through a wind-liquid heat exchanger, and the second heat dissipation water-cooled plate (18) is connected to the rear water inlet pipe (20) of the rear main water circuit through a wind-liquid heat exchanger.

[0031] Furthermore, a fan (19) is fixedly connected to one side of the aforementioned downstream IGBT power module (15).

[0032] Preferably, the fan (19) is fixedly connected to the right side of the downstream IGBT power module (15).

[0033] As an auxiliary heat dissipation device in the air-liquid heat exchanger, the fan (19) raises the temperature of the cooling water as it flows inside the heat exchanger (air-liquid heat exchanger) and absorbs the heat from different heat-generating elements. The fan (19) connected to the heat exchanger blows external cold air onto the surface of the heat exchanger, carrying away the heat and rapidly cooling the cooling water, thereby improving the efficiency of the entire hydrogen production power water cooling system.

[0034] Furthermore, the front-stage No. 4 heat exchanger (12) is connected to a first tube coil (27), and the rear-stage No. 3 heat exchanger (22) is connected to a second tube coil (28).

[0035] Preferably, the first tube coil (27) covers the inlet or outlet of the pre-stage fourth heat exchanger (12) to prevent coolant (water) leakage and diffusion.

[0036] Preferably, the second tube coil (28) covers the inlet or outlet of the subsequent third heat exchanger (22) to prevent the coolant (water) from leaking and spreading.

[0037] Preferably, the cooling water is a mixture of ethylene glycol and water, which is antifreeze and has a high specific heat capacity, enabling it to effectively absorb and conduct heat.

[0038] Furthermore, the external water inlet (9) is connected to an exhaust valve (13), and a first pressure gauge (8) is also provided on the external water inlet (9).

[0039] Preferably, the exhaust valve (13) is used to remove air from the water path.

[0040] Preferably, the first pressure gauge (8) is used to detect the pressure at the external water inlet (9).

[0041] Furthermore, a second pressure gauge (10) is provided on the external water outlet (11).

[0042] Preferably, the second pressure gauge (10) is used to detect the pressure at the external water outlet (11).

[0043] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0044] 1. The system adopts a closed-loop circulating water cooling structure, which directly absorbs the heat generated by the IGBT module through the heat dissipation water cooling plate, and uses the fan of the air-liquid heat exchanger as an auxiliary heat dissipation device, which effectively accelerates the heat dissipation and ensures the stability of the IGBT hydrogen production power supply under high power and long-term operation.

[0045] 2. The installation of the air-liquid heat exchanger not only improves heat dissipation efficiency, but also effectively reduces the noise generated during system operation through the reasonable layout and operation of the fan, meeting the strict noise requirements of specific application environments;

[0046] 3. The pre-stage No. 4 heat exchanger and the post-stage No. 3 heat exchanger adopt a connecting tube coil design, which effectively prevents coolant leakage and diffusion, improving the safety and reliability of the system. Meanwhile, pressure gauges are installed at the external inlet and outlet to monitor the pressure in the inlet and outlet water pipes in real time, allowing for timely detection and handling of potential problems.

[0047] 4. The system adopts a modular design with compact connections between components, facilitating installation and maintenance. Key components such as the cooling water plate and air-liquid heat exchanger are connected to the main water circuit via stainless steel corrugated pipes, ensuring the flow of coolant, facilitating component replacement and repair, reducing maintenance costs, and improving system upgradeability. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 is a front view of the hydrogen production power supply water cooling system of Embodiment 1 of this utility model;

[0050] Figure 2 is a rear view of the hydrogen production power supply water cooling system of Embodiment 1 of this utility model;

[0051] Figure 3 is a schematic diagram of the heat exchange cycle of the hydrogen production power supply water cooling heat dissipation system in Embodiment 1 of this utility model.

[0052] Figure 4 is a schematic diagram of the structure of the second heat dissipation water-cooled plate in Embodiment 2 of this utility model;

[0053] Figure 5 is a front view of the air-liquid heat exchanger of Embodiment 3 of this utility model;

[0054] Figure 6 is a rear view of the air-liquid heat exchanger of Embodiment 3 of this utility model.

[0055] Explanation of the markings in the image:

[0056] 1-Pre-stage IGBT power module; 2-Pre-stage No. 1 heat exchanger; 3-Pre-stage No. 2 main water loop heat exchanger; 4-Pre-stage No. 3 main water loop heat exchanger; 5-First cooling water plate; 6-Pre-stage inlet pipe; 7-Pre-stage outlet pipe; 8-First pressure gauge; 9-External water inlet; 10-Second pressure gauge; 11-External water outlet; 12-Pre-stage No. 4 heat exchanger; 13-Exhaust valve; 14-Water-cooled hydrogen production cabinet; 15-Rear-stage IGBT power module; 16-Rear-stage 17-Second stage main water circuit heat exchanger; 18-Second stage water cooling plate; 19-Fan; 20-Second stage inlet pipe; 21-Second stage outlet pipe; 22-Second stage third stage heat exchanger; 23-First port; 24-Second port; 25-Third port; 26-Fourth port; 27-First tube coil; 28-Second tube coil; 29-Air-liquid heat exchanger inlet; 30-Plate-fin heat exchanger; 31-Fan; 32-Air-liquid heat exchanger outlet. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0058] In describing this utility model, it is necessary to clarify that directional or positional terms such as "above," "below," "inside," "outside," "front end," "rear end," "both ends," "one end," and "the other end" are all based on the relative positional relationships shown in the accompanying drawings. The use of these terms is intended to simplify the description and facilitate understanding of this utility model, and does not mandate that the described device or component must follow a specific orientation or construction method; therefore, they do not constitute any limitation on this utility model. Similarly, the serial numbers such as "first" and "second" are only used to distinguish the described objects and are not intended to emphasize their relative importance.

[0059] Furthermore, the interpretation of terms such as "installed," "configured with," and "connected" in this utility model should be broad. For example, the term "connected" not only covers fixed and detachable connections but also integrated connections; it can refer to mechanical or electrical connections; it can be a direct connection or an indirect connection through an intermediate medium, or even the interconnection within two components. For those skilled in the art, the specific meaning of these terms in this utility model should be flexibly interpreted according to the actual situation.

[0060] Example 1

[0061] As shown in Figures 1-3, the hydrogen production power supply water-cooled heat dissipation system includes an interconnected closed-loop circulating water-cooling structure and a wind-liquid heat exchanger. The closed-loop circulating water-cooling structure includes a water-cooled hydrogen production cabinet (14), a front-stage IGBT power module (1), and a rear-stage IGBT power module (15). Both the front-stage IGBT power module (1) and the rear-stage IGBT power module (15) are housed within the water-cooled hydrogen production cabinet (14). In this embodiment, the front-stage IGBT power module (1) and the rear-stage IGBT power module (15) are interconnected. The front-stage IGBT power module (1) converts AC power into DC power and supplies it to the rear-stage IGBT power module (15).

[0062] The front-stage IGBT power module (1) is provided with a front-stage No. 1 heat exchanger (2) on one side, and a first heat dissipation water cooling plate (5) is fixed on the front-stage IGBT power module (1). A front-stage main water circuit is provided below the front-stage IGBT power module (1). The front-stage main water circuit includes a front-stage inlet pipe (6) and a front-stage outlet pipe (7) that are connected to each other. The first heat dissipation water cooling plate (5) has good thermal conductivity and can quickly conduct the heat generated by the front-stage IGBT power module (1) to the cooling water flowing through it.

[0063] The first heat dissipation water-cooled plate (5) is provided with a first port (23) and a second port (24). The first port (23) is connected to the pre-stage water inlet pipe (6), and the second port (24) is connected to the pre-stage water outlet pipe (7). In this embodiment, the first port (23) is the water inlet, and the second port (24) is the water outlet. The first port (23) is connected to the pre-stage water inlet pipe (6) through a stainless steel corrugated pipe. The second port (24) is connected to the pre-stage water outlet pipe (7) through a stainless steel corrugated pipe. The setting of the first port (23) can ensure that the cooling water can flow smoothly into the interior of the first heat dissipation water-cooled plate (5), and the setting of the second port (24) can allow the cooling water after absorbing heat to flow into the first heat dissipation water-cooled plate (5) and enter the next cooling cycle.

[0064] The aforementioned front-stage main water circuit also includes a front-stage second main water circuit heat exchanger (3) and a front-stage third main water circuit heat exchanger (4) that are interconnected. The front-stage second main water circuit heat exchanger (3) is connected to the front-stage outlet water pipe (7). Cooling water flows into the first heat dissipation water cooling plate (5) under the guidance of the front-stage inlet water pipe (6), absorbs heat, and then flows out to the front-stage outlet water pipe (7). It then undergoes further cooling treatment through the front-stage second main water circuit heat exchanger (3) and the front-stage third main water circuit heat exchanger (4).

[0065] In this embodiment, the first pre-stage heat exchanger (2) is located on the left side of the pre-stage IGBT power module (1) and is fixedly connected to it. Additionally, the first pre-stage heat exchanger (2) is fixed to the left side of the water-cooled hydrogen production cabinet (14) to dissipate heat from the water-cooled hydrogen production cabinet (14), ensuring stable operation without overheating affecting its performance. Below the main water circuit of the pre-stage is a fourth pre-stage heat exchanger (12) to dissipate heat from the power cabinet in the pre-stage circuit, ensuring that components such as reactors maintain stable performance during long-term operation.

[0066] A second heat dissipation water-cooling plate (18) is fixed on the downstream IGBT power module (15). A fan (19) is fixedly connected to one side of the downstream IGBT power module (15). A downstream main water circuit is provided below the downstream IGBT power module (15). The downstream main water circuit includes a downstream inlet pipe (20) and a downstream outlet pipe (21) that are connected to each other. The second heat dissipation water-cooling plate (18) is used to directly absorb the heat generated by the downstream IGBT power module (15). In this embodiment, the fan (19) is fixedly connected to the right side of the downstream IGBT power module (15). The fan (19) serves as an auxiliary heat dissipation device to enhance the heat dissipation effect. The first heat dissipation water-cooling plate (5) is connected to the upstream inlet pipe (6) of the upstream main water circuit through a wind-liquid heat exchanger. The second heat dissipation water-cooling plate (18) is connected to the downstream inlet pipe (20) of the downstream main water circuit through a wind-liquid heat exchanger.

[0067] The downstream main water circuit also includes a downstream primary main water circuit heat exchanger (16) and a downstream secondary main water circuit heat exchanger (17) connected to each other. The downstream secondary main water circuit heat exchanger (17) is connected to the downstream outlet water pipe (21). The downstream primary main water circuit heat exchanger (16) and the downstream secondary main water circuit heat exchanger (17) are used to transfer heat from the cooling water to the outside air to achieve cooling of the cooling water. A downstream secondary heat exchanger (22) is provided below the downstream main water circuit. The downstream secondary heat exchanger (22) is fixed below the downstream main water circuit and is used to dissipate heat from the downstream power cabinet. The downstream secondary heat exchanger (22) is connected to the downstream inlet water pipe (20) of the downstream main water circuit through a stainless steel corrugated pipe. The second heat dissipation water-cooled plate (18) is provided with a third port (25) and a fourth port (26). The third port (25) is connected to the downstream water inlet pipe (20), and the fourth port (26) is connected to the downstream water outlet pipe (21). The third port (25) is the water inlet, and the fourth port (26) is the water outlet. The third port (25) is connected to the downstream water inlet pipe (20) via a stainless steel corrugated pipe. The fourth port (26) is connected to the downstream water outlet pipe (21) via a stainless steel corrugated pipe. The arrangement of the third port (25) and the fourth port (26) ensures that the cooling water can circulate smoothly between the second heat dissipation water-cooled plate (18) and the downstream main water circuit. The cooling water in both the upstream and downstream main water circuits is a mixture of ethylene glycol and water, which has antifreeze properties and a high specific heat capacity, enabling it to maintain stable heat dissipation performance over a wide temperature range.

[0068] The pre-stage fourth heat exchanger (12) is connected to a first tube coil (27), and the post-stage third heat exchanger (22) is connected to a second tube coil (28). The first tube coil (27) covers the inlet or outlet of the pre-stage fourth heat exchanger (12) to prevent coolant (water) leakage and diffusion. The second tube coil (28) covers the inlet or outlet of the post-stage third heat exchanger (22) to prevent coolant (water) leakage and diffusion.

[0069] The heat exchange cycle of the hydrogen production power supply water cooling system is as follows:

[0070] The rear water inlet pipe (20) has an external water inlet (9) on one side, and the rear water outlet pipe (21) has an external water outlet (11) on one side. The front water inlet pipe (6) and the rear water inlet pipe (20) are both connected to the external water inlet (9), and the front water outlet pipe (7) and the rear water outlet pipe (21) are both connected to the external water outlet (11). Cooling water flows from the external inlet (9) through stainless steel corrugated pipes into the first port (23) of the first heat dissipation water cooling plate (5) and the third port (25) of the second heat dissipation water cooling plate (18). After absorbing heat, it flows out through the second port (24) and the fourth port (26). It then passes through the first stage No. 2 main water circuit heat exchanger (3) and the first stage No. 3 main water circuit heat exchanger (4) in the front stage main water circuit and the second stage No. 1 main water circuit heat exchanger (16) and the second stage No. 2 main water circuit heat exchanger (17) in the rear stage main water circuit for cooling, forming a closed-loop internal water circulation.

[0071] The external water inlet (9) is connected to an air vent valve (13), and a first pressure gauge (8) is also provided on the external water inlet (9). The air vent valve (13) is used to remove air from the water circuit, and the first pressure gauge (8) is used to detect the pressure at the external water inlet (9). The external water inlet (9) provides cooling water to the system. A second pressure gauge (10) is provided on the external water outlet (11). The second pressure gauge (10) is used to detect the pressure at the external water outlet (11). The external water outlet (11) discharges the cooled water that has absorbed heat from the system, forming an external water circulation.

[0072] In the internal air circulation, the fan (19) serves as an auxiliary heat dissipation device in the air-liquid heat exchanger. When the cooling water flows inside the air-liquid heat exchanger and absorbs the heat from different internal heat-generating elements, its temperature rises. The fan (19) blows external cold air onto the surface of the air-liquid heat exchanger, carrying away the heat and rapidly cooling the cooling water, thereby improving the efficiency of the entire hydrogen production power water cooling system and forming an internal air circulation.

[0073] The second heat dissipation water-cooled plate (18) is provided with a third port (25) and a fourth port (26). The third port (25) is connected to the downstream water inlet pipe (20) through a stainless steel corrugated pipe to ensure that cooling water can flow into the interior of the second heat dissipation water-cooled plate (18). The fourth port (26) is connected to the downstream water outlet pipe (21) through a stainless steel corrugated pipe, so that the cooling water after absorbing heat can flow out of the second heat dissipation water-cooled plate (18).

[0074] Example 2

[0075] Figure 4 shows a schematic diagram of the structure of the second heat dissipation water-cooled plate in Embodiment 2. The difference between Embodiment 2 and Embodiment 1 is that the second heat dissipation water-cooled plate (18) in Embodiment 2 is also provided with multiple heat dissipation holes. These heat dissipation holes are evenly distributed on the surface of the second heat dissipation water-cooled plate (18), increasing the heat dissipation area of ​​the second heat dissipation water-cooled plate (18) and improving the overall heat dissipation efficiency.

[0076] Example 3

[0077] The front view of the air-liquid heat exchanger of Example 3 is shown in Figure 5, and the rear view of the air-liquid heat exchanger of Example 3 is shown in Figure 6. The difference between Example 3 and Example 1 is that the air-liquid heat exchanger of Example 3 includes a plate-fin heat exchanger (30) and a fan (31). The fan (31) is located above the plate-fin heat exchanger (30). The plate-fin heat exchanger (30) is provided with an air-liquid heat exchanger inlet (29) and an air-liquid heat exchanger outlet (32). In the air-liquid heat exchanger, the plate-fin heat exchanger (30) is made of fins made of thin metal plates stacked together to form dense fluid channels. Cooling water can flow in through the air-liquid heat exchanger inlet (29) and be evenly distributed along the flow channels between the fins. The fins are fixed together with the baffles by brazing. The plate bundle is composed of multiple unit bodies composed of baffles, fins, seals and guide vanes stacked together. Multiple parallel fluid channels are formed by brazing. Cooling water flows out from the air-liquid heat exchanger outlet (32). The fan (31) is fixed above the plate-fin heat exchanger (30) by screws. The fan (31) pushes air to flow over the fin surface of the plate-fin heat exchanger (30) and exchange heat with the liquid on the fin.

[0078] In summary, this utility model provides a water-cooled heat dissipation system for a hydrogen production power supply. This system includes a closed-loop circulating water-cooling structure. An IGBT power module is housed within this structure, with a water-cooling plate placed on top of the IGBT module. The closed-loop circulating water-cooling structure is equipped with a wind-liquid heat exchanger as a heat exchange device, forming a circulating flow of the cooling medium and a heat exchange process with the external environment. Simultaneously, the system can accelerate airflow across the heat exchanger surface via air cooling to assist heat exchange, thereby improving overall heat exchange efficiency. Through the closed-loop circulating water-cooling structure and the wind-liquid heat exchanger, this system achieves efficient and stable heat exchange for the IGBT hydrogen production power supply within a limited space, ensuring the long-term reliable operation of the power supply.

[0079] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A water-cooled heat dissipation system for a hydrogen production power source, characterized in that, The system includes an interconnected closed-loop circulating water-cooled structure and a wind-liquid heat exchanger. The closed-loop circulating water-cooled structure includes a water-cooled hydrogen production cabinet (14), a front-stage IGBT power module (1), and a rear-stage IGBT power module (15). Both the front-stage IGBT power module (1) and the rear-stage IGBT power module (15) are housed within the water-cooled hydrogen production cabinet (14). A front-stage first heat exchanger (2) is provided on one side of the front-stage IGBT power module (1), and a fixed heat exchanger (2) is mounted on the front-stage IGBT power module (1). A first heat dissipation water-cooling plate (5) is fixed on the front stage IGBT power module (1), and a front stage main water circuit is provided below the front stage IGBT power module (1). The front stage main water circuit includes a front stage inlet pipe (6) and a front stage outlet pipe (7) that are connected to each other. A second heat dissipation water-cooling plate (18) is fixed on the rear stage IGBT power module (15), and a rear stage main water circuit is provided below the rear stage IGBT power module (15). The rear stage main water circuit includes a rear stage inlet pipe (20) and a rear stage outlet pipe (21) that are connected to each other.

2. The hydrogen production power supply water-cooled heat dissipation system as described in claim 1, characterized in that, The pre-stage main water circuit also includes a pre-stage No. 2 main water circuit heat exchanger (3) and a pre-stage No. 3 main water circuit heat exchanger (4) that are connected to each other. The pre-stage No. 2 main water circuit heat exchanger (3) is connected to the pre-stage outlet water pipe (7). A pre-stage No. 4 heat exchanger (12) is provided below the pre-stage main water circuit.

3. The hydrogen production power supply water-cooled heat dissipation system as described in claim 2, characterized in that, The downstream main water circuit also includes a downstream No. 1 main water circuit heat exchanger (16) and a downstream No. 2 main water circuit heat exchanger (17) connected to each other. The downstream No. 2 main water circuit heat exchanger (17) is connected to the downstream outlet water pipe (21). A downstream No. 3 heat exchanger (22) is provided below the downstream main water circuit.

4. The hydrogen production power supply water-cooled heat dissipation system as described in claim 3, characterized in that, The first heat dissipation water cooling plate (5) is provided with a first port (23) and a second port (24). The first port (23) is connected to the front water inlet pipe (6), and the second port (24) is connected to the front water outlet pipe (7).

5. The hydrogen production power supply water-cooled heat dissipation system as described in claim 4, characterized in that, The second heat dissipation water cooling plate (18) is provided with a third port (25) and a fourth port (26). The third port (25) is connected to the downstream water inlet pipe (20), and the fourth port (26) is connected to the downstream water outlet pipe (21).

6. The hydrogen production power supply water-cooled heat dissipation system as described in claim 5, characterized in that, The rear water inlet pipe (20) is provided with an external water inlet (9) on one side, and the rear water outlet pipe (21) is provided with an external water outlet (11) on one side. The front water inlet pipe (6) and the rear water inlet pipe (20) are both connected to the external water inlet (9), and the front water outlet pipe (7) and the rear water outlet pipe (21) are both connected to the external water outlet (11). The first heat dissipation water cooling plate (5) is connected to the front water inlet pipe (6) of the front main water circuit through a wind-liquid heat exchanger, and the second heat dissipation water cooling plate (18) is connected to the rear water inlet pipe (20) of the rear main water circuit through a wind-liquid heat exchanger.

7. The hydrogen production power supply water-cooled heat dissipation system as described in claim 6, characterized in that, A fan (19) is fixedly connected to one side of the aforementioned downstream IGBT power module (15).

8. The hydrogen production power supply water-cooled heat dissipation system as described in claim 7, characterized in that, The first tube coil (27) is connected to the fourth heat exchanger (12) in the front stage, and the second tube coil (28) is connected to the third heat exchanger (22) in the rear stage.

9. The hydrogen production power supply water-cooled heat dissipation system as described in claim 8, characterized in that, The external water inlet (9) is connected to an air vent valve (13), and a first pressure gauge (8) is also provided on the external water inlet (9).

10. The hydrogen production power supply water-cooled heat dissipation system as described in claim 9, characterized in that, The external water outlet (11) is equipped with a second pressure gauge (10).

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